MySQL semisynchronous is similar to a Cassandra consistency level of 1. That is typically a lens that helps. As block devices aren't ACID, their challenges are

MySQL semisynchronous is similar to a Cassandra consistency level of 1. That is typically a lens that helps. As block devices aren't ACID, their challenges are greater. But note the following from the MySQL docs, similar problems exist when you have to fail over with uncommitted transactions. > With semisynchronous replication, if the source crashes and a failover to a replica is carried out, the failed source should not be reused as the replication source, and should be discarded. It could have transactions that were not acknowledged by any replica, which were therefore not committed before the failover.